<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
<%
	int a = 10;
	int b = 20;
	int result = a+b;
	out.println("结果是"+result);
%>
</body>
</html>